Trolley



vw. E. SIMPSON.

TROLLEY.

V A APPLICTION FILED NCV.29,"'1920.A 1,428,61 3 ,Patented Sept. 12, 1922.

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NETE@ STAT WILLIAM E. SIMPSON, OF DETROIT, MICHIGAN, ASSEGNO?" TO PALMER-BEE COIIPAY, 0F DETROIT, MICHIGAN, .A CORPORATION OF MICHIGAN.

TROLLEY.

Application filed November 29, 1920. Serial No. 426,578.

To all whom it may concer/1t.'

Be it known that l, VVILLTAM E. SIMPSON, a subject of the King of Great Britain and Ireland, residing at Detroit, in the county of lWayne and btate ot li/lichigan, have invented certain new and useful Improvements in Trolleys, of which the following is a speci.- tication, reference being had therein to the accompanying drawings.

The invention relates to trolleys and more particularly to that type designed for use in conveyor systems. One object of the invention is the provision of a trolley having a simple :term of frame provided with an abutment for engagement of a driver and a load sustaining lug. Another object is to so construct and arrange the parts of the trolley that different 'forms of track may be successfully used. .Further objects of the invention reside in the novel features of construction as more fully hereinafterset forth.

In the drawings:

Figure l is a side elevation of a portion of a conveyor system showing the trolley embodying my invention;

Figure 2 is a top plan view of the trolley;

Figures 3 and 4l are respectively cross sections on the lines 3--3 and t-r et Figure l.

The trolley has the traine 'l 'formed oit the spaced side bars 2 and the end bars 3 integral therewith. 4 are trolley wheels ernbraced by the frame and rotatably mounted upon the pins 5 extending between the side bars 2 and .uoirrotatably secured thereto by means olf the cotter pins extending through the pins 5 and the bearings Q. proj ecting laterally from the side bars 2. The cotter pins also prevent longitudinal displacement ot the pins.

For the' purpose of re-inforcing the side bars of the frame, there is the cross web 7 intermediate the trolley wheels fl: and. con necting the side bars 2. This web has an 'l-shaped vertical cross section, and also has the aperture 8 through its middle or nentral axis :For lightening the iframe. 9 is an extension at the middle off the upper edge of the cross web 7 and integral therewith, this extension projecting above the upper surfaces ot the trolley wheels and forming an abutment Yfor enormement ot the driver l0 which is secured Vto a suitable conveyor chain (not shown). The horizontal cross section of the abutment 9 is I-shaped with the longitudinal axis oi the I extending longitudinally of the frameot the trolley. The end ot the I is cngageable by the driver and the arrangement is such that the abutment is greatly reinforced and at the same time, the iframe of the trolley is reinforced to easily carry the stress. Depending Ytrom the middle of the lower edge of the cross web 7 and integral therewith is the load sustaining lug which has the eye 12 therethrough adapted for engagement with the load carrier.

The trolley wheels Ll are rotatably mounted upon the pins 5, anti-friction bearingsl being preferably provided. la are ther end bearing plates for the trolley wheels, surrounding the pins 5 and nonrotatably secured to the trolley wheels. As shown, the trolley wheels #l have the annular recesses 15 with the liat sides 16 in their opposite ends andthe end bearing plates 14; are similarly shaped and engage in these recesses.

The trolley wheels fl have the central annular flanges 17 which extend between the adjacent edges of the flanges 18 for supporting and guiding the trolley. The load sustaining lug ll is in substantial alignnient with these annular lianges and also extends between the adjacent edges oit the flanges i8 so that it will. not interfere with the movement ol the trolley. Since the abutment 9 .is also midway between the sides ol? the trolley it will permit ol.z using a track 19 with its upper flanges extending inu'fardly toward each other as well as extending outwardly away trom each other.

From the above description, it will be readily seen that I have provided a simple form o1" trolley frame which can be formed of a casting and which is re-inforced and has re-inforced abutment for the engagement of the driver. Furthermore, the con struction. is such that the load sustaining lug and the abut-ment tor engagement ot the driver will not interfere with the various types oit tracks.

`What I claim as my invention is:

l.. ln a trolley, a :frame having spaced side bars, a cross web connecting said side bars and forming a reinforcement therefor, and an abutment for engagement ol a driver extending transversely oit said web.

2. ln a trolley, a traine having spaced side bars, an integral cross Web connecting said side bars and forming a reinforcement therefor, said cross web having an I-shaped cross section, and an abutment extending from and integral with said cross Web, said abutment having an I-shaped cross section transverse to said cross Web, one end .of said abutment being adapted for engagement of a driver.

3. In a trolley, the combination with a pair of trolley Wheels, of a frame having spaced side bars at opposite ends of said trolley wheels, a cross web yintermediate said trolley Wheels and vconnecting said side bars to forni a reinforcement therefor, an extension upon one edge ,o'l' said` cross web forming an abutment 'for engagement of a driver, and a load-sustaining lug upon the opposite edge ol said cross web.

l. in a trolley, the combination with a pair of trolley Wheels, or' a frame having spaced side bars at opposite ends of said trolley wheels, pins upon which said trolley Wheels are mounted, extending between said side bars, an integral cross web intermediate said trolley wheels and connecting said side bars, said cross Web having an I-shaped vertical cross section, an integral abutment extending trom the middle of the upper edge of said cross web, said abutment having an -shaped cross section extending longitudinally of said frameeand an integral load sustaining lug depending from the middle el? the lower edge of said cross web.

5. ln a trolley, the combination with a pair of trolley Wheels, of a frame having spaced side bars at opposite ends of said trolley Wheels and integral end bars, said side bars increasing in depth from their ends toward `their middles, pins extending between said side bars and upon Which said trolley Wheels are rotatably mounted, an integral cross web intermediate said trolley wheels and connecting said side bars, an integral extension upon the upper edge of said cross web and at its middle, said extension 'forming an abutment for engagement ol a driver, and an integral load sustaining lug extending from the middle of the lower edge of said cross web.

(i. ln a trolley, the combination ivitha `frame having spaced side bars and a nonrotatable pin extending therebetween, of a trolley wheel rotatably mounted on said pin, and end bearing plates iter-said trolley Wheel surrounding said pin and non-rotatably secured to said trolley Wheel, said plates being held to said trolleyivheel by said side bars.

7. In a trolley, the ooinbiirationy with a :trame havingspaced side bars and a nonrotatable pin extending therebetween, ot a trolley Wheel rotatably mounted on said pin and having a central annular peripheral flange and annular recesses ivith flat sides in its opposite ends, and end bearing plates of corresponding shape and held in engagement in said recesses by said side bars.

In testimony ivhereofl atlix niy signature.

WILLAM E. STMPMlN. 

